3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regex = '(((?!a).)*)*a\\{'; $test_string = 'AAAAAAAAAAAAAA{AA'; echo "1:".mb_ereg_replace('/'.$regex.'/','WORKED',$test_string)."\n"; echo "2:".preg_replace('/'.$regex.'/u','WORKED',$test_string)."\n"; echo "3:".preg_replace('/'.$regex.'/','WORKED',$test_string)."\n";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0100.01916.75
8.3.50.0100.01922.12
8.3.40.0070.01418.95
8.3.30.0030.01719.19
8.3.20.0040.00720.30
8.3.10.0040.00721.95
8.3.00.0030.00919.51
8.2.180.0130.01318.54
8.2.170.0140.01422.96
8.2.160.0070.01320.52
8.2.150.0040.00824.18
8.2.140.0070.01424.66
8.2.130.0000.01126.16
8.2.120.0060.00622.50
8.2.110.0030.01020.60
8.2.100.0120.00617.97
8.2.90.0080.00618.00
8.2.80.0030.01019.03
8.2.70.0030.01217.88
8.2.60.0030.01117.93
8.2.50.0030.01018.07
8.2.40.0040.01118.35
8.2.30.0030.01018.07
8.2.20.0030.01018.01
8.2.10.0030.01018.10
8.2.00.0000.01818.03
8.1.280.0130.01625.92
8.1.270.0060.00624.00
8.1.260.0060.00626.35
8.1.250.0040.00728.09
8.1.240.0070.00718.97
8.1.230.0090.01317.83
8.1.220.0070.00717.74
8.1.210.0030.01018.77
8.1.200.0060.00917.48
8.1.190.0000.01417.48
8.1.180.0000.01418.10
8.1.170.0000.01419.03
8.1.160.0030.01019.01
8.1.150.0070.01018.79
8.1.140.0000.01417.73
8.1.130.0030.00917.89
8.1.120.0000.01417.64
8.1.110.0000.01317.70
8.1.100.0000.01317.75
8.1.90.0000.01317.63
8.1.80.0030.01117.80
8.1.70.0000.01317.68
8.1.60.0060.00917.93
8.1.50.0060.00917.80
8.1.40.0030.01217.78
8.1.30.0060.00917.84
8.1.20.0040.01117.95
8.1.10.0000.01517.80
8.1.00.0000.01517.68
8.0.300.0060.00918.77
8.0.290.0030.01017.00
8.0.280.0000.01418.60
8.0.270.0000.01718.94
8.0.260.0000.01217.39
8.0.250.0030.00917.20
8.0.240.0060.00617.29
8.0.230.0030.01017.26
8.0.220.0000.01317.29
8.0.210.0040.01217.12
8.0.200.0060.00617.27
8.0.190.0040.01017.29
8.0.180.0040.01117.27
8.0.170.0040.01117.21
8.0.160.0030.01117.23
8.0.150.0070.00717.16
8.0.140.0000.01417.15
8.0.130.0000.01213.68
8.0.120.0030.01217.09
8.0.110.0030.01017.24
8.0.100.0030.01017.11
8.0.90.0040.01117.13
8.0.80.0130.01917.23
8.0.70.0000.01417.30
8.0.60.0070.00717.25
8.0.50.0030.01017.14
8.0.30.0090.02417.26
8.0.20.0100.01717.46
8.0.10.0000.01317.28
8.0.00.0130.01417.08
7.4.330.0030.00815.16
7.4.320.0030.00916.80
7.4.300.0070.00716.76
7.4.290.0030.01116.79
7.4.280.0070.01016.66
7.4.270.0060.00916.80
7.4.260.0030.01016.70
7.4.250.0000.01416.75
7.4.240.0030.01216.80
7.4.230.0000.01416.98
7.4.220.0090.01916.96
7.4.210.0060.02016.82
7.4.200.0070.00716.89
7.4.190.0030.01016.97
7.4.160.0130.01316.71
7.4.150.0100.02017.40
7.4.140.0110.02417.86
7.4.130.0070.02016.72
7.4.120.0030.02316.87
7.4.110.0140.02416.67
7.4.100.0070.03016.68
7.4.90.0070.02416.76
7.4.80.0070.02119.39
7.4.70.0060.01916.64
7.4.60.0150.01216.70
7.4.50.0000.01716.63
7.4.40.0040.01522.77
7.4.30.0070.01816.66
7.4.10.0030.02414.90
7.4.00.0030.02215.25
7.3.330.0040.00813.33
7.3.320.0030.01013.54
7.3.310.0030.01016.63
7.3.300.0070.00716.57
7.3.290.0000.01416.57
7.3.280.0100.02216.52
7.3.270.0190.01317.40
7.3.260.0090.01916.38
7.3.250.0180.02116.42
7.3.240.0110.01616.84
7.3.230.0120.01616.71
7.3.210.0120.01516.35
7.3.200.0060.02219.39
7.3.190.0160.02216.58
7.3.180.0030.02216.75
7.3.170.0150.02116.56
7.3.160.0060.01916.46
7.3.130.0070.01714.77
7.3.120.0090.01314.99
7.3.110.0050.02215.02
7.3.100.0050.01814.78
7.3.90.0020.02014.94
7.3.80.0090.01614.81
7.3.70.0020.01814.94
7.3.60.0070.01815.04
7.3.50.0030.01915.08
7.3.40.0060.01514.75
7.3.30.0050.01215.00
7.3.20.0060.01316.63
7.3.10.0050.01616.83
7.3.00.0030.01816.78
7.2.330.0160.02016.77
7.2.320.0000.02716.75
7.2.310.0120.02816.82
7.2.300.0070.01816.75
7.2.290.0070.02016.75
7.2.260.0030.02415.35
7.2.250.0130.01415.08
7.2.240.0050.01615.28
7.2.230.0100.02015.05
7.2.220.0050.01915.14
7.2.210.0030.01615.01
7.2.200.0080.01315.10
7.2.190.0100.01315.31
7.2.180.0080.01415.31
7.2.170.0090.01115.27
7.2.160.0060.01315.33
7.2.150.0090.01217.06
7.2.140.0030.01717.03
7.2.130.0040.01816.97
7.2.120.0070.01317.01
7.2.110.0050.01617.01
7.2.100.0060.01716.97
7.2.90.0080.01516.99
7.2.80.0050.01817.13
7.2.70.0070.01616.97
7.2.60.0060.01716.96
7.2.50.0060.01617.09
7.2.40.0030.01917.01
7.2.30.0050.01717.08
7.2.20.0050.01817.01
7.2.10.0050.01717.14
7.2.00.0040.01717.63
7.1.330.0060.01516.03
7.1.320.0050.02215.92
7.1.310.0080.01016.01
7.1.300.0050.01515.88
7.1.290.0090.01215.77
7.1.280.0030.01615.88
7.1.270.0030.01715.85
7.1.260.0060.01115.79
7.1.250.0060.01515.79
7.1.240.0040.01615.91
7.1.230.0070.01415.98
7.1.220.0000.02715.88
7.1.210.0070.01815.89
7.1.200.0040.01515.93
7.1.190.0050.01115.88
7.1.180.0020.02215.92
7.1.170.0050.01915.82
7.1.160.0050.01416.04
7.1.150.0090.01215.88
7.1.140.0000.01815.91
7.1.130.0050.02015.91
7.1.120.0050.01915.95
7.1.110.0050.01515.98
7.1.100.0050.01816.85
7.1.90.0030.02215.81
7.1.80.0050.01916.06
7.1.70.0030.01716.32
7.1.60.0060.02117.10
7.1.50.0030.02016.33
7.1.40.0070.01416.03
7.1.30.0030.01615.97
7.1.20.0100.01115.98
7.1.10.0080.01315.87
7.1.00.0040.04118.15
7.0.330.0090.01715.46
7.0.320.0080.01415.35
7.0.310.0050.01515.52
7.0.300.0050.01615.54
7.0.290.0080.01515.45
7.0.280.0030.01915.52
7.0.270.0060.01615.55
7.0.260.0030.01915.43
7.0.250.0050.01515.60
7.0.240.0030.01715.58
7.0.230.0030.02115.35
7.0.220.0050.01415.43
7.0.210.0030.01815.62
7.0.200.0080.01315.95
7.0.190.0070.01715.70
7.0.180.0060.01515.54
7.0.170.0050.01415.67
7.0.160.0040.02415.22
7.0.150.0090.01615.74
7.0.140.0050.03917.72
7.0.130.0060.01415.62
7.0.120.0020.01815.58
7.0.110.0050.01415.64
7.0.100.0020.02115.55
7.0.90.0050.01815.58
7.0.80.0060.01315.65
7.0.70.0070.03817.54
7.0.60.0030.04317.45
7.0.50.0020.02917.89
7.0.40.0090.02715.68
7.0.30.0020.03515.76
7.0.20.0020.03015.79
7.0.10.0060.03115.66
7.0.00.0070.03215.74
5.6.400.0000.08114.62
5.6.390.0130.07414.43
5.6.380.0030.08014.43
5.6.370.0080.07514.11
5.6.360.0050.08314.21
5.6.350.0050.08014.06
5.6.340.0070.07914.42
5.6.330.0050.07914.36
5.6.320.0080.07514.25
5.6.310.0060.08414.15
5.6.300.0050.07714.14
5.6.290.0050.08514.31
5.6.280.0080.09016.53
5.6.270.0080.07914.23
5.6.260.0080.07714.24
5.6.250.0050.08114.29
5.6.240.0100.07414.37
5.6.230.0030.08114.46
5.6.220.0070.07614.35
5.6.210.0080.08316.32
5.6.200.0090.07516.38
5.6.190.0070.08016.47
5.6.180.0040.08916.54
5.6.170.0060.09616.53
5.6.160.0060.08216.53
5.6.150.0070.09716.45
5.6.140.0070.09316.45
5.6.130.0040.09316.71
5.6.120.0060.09616.55
5.6.110.0060.09716.59
5.6.100.0040.08316.65
5.6.90.0030.07716.58
5.6.80.0040.08616.22
5.6.70.0070.09216.47
5.6.60.0070.08816.25
5.6.50.0040.07516.24
5.6.40.0040.08716.28
5.6.30.0050.08716.29
5.6.20.0040.09616.31
5.6.10.0020.07816.31
5.6.00.0040.07616.30
5.5.380.0080.07312.77
5.5.370.0030.08912.54
5.5.360.0020.08112.71
5.5.350.0050.09515.24
5.5.340.0050.07415.49
5.5.330.0040.08515.38
5.5.320.0010.08515.33
5.5.310.0030.09815.43
5.5.300.0020.09215.31
5.5.290.0050.09515.47
5.5.280.0030.07715.41
5.5.270.0040.08115.45
5.5.260.0040.09815.21
5.5.250.0040.09415.20
5.5.240.0070.08615.22
5.5.230.0070.08515.12
5.5.220.0060.08915.01
5.5.210.0060.09015.11
5.5.200.0080.08815.14
5.5.190.0030.09715.19
5.5.180.0030.10015.15
5.5.170.0030.07612.52
5.5.160.0020.09015.09
5.5.150.0070.08715.11
5.5.140.0080.07015.03
5.5.130.0020.08115.19
5.5.120.0050.09115.30
5.5.110.0090.08615.10
5.5.100.0060.08715.14
5.5.90.0080.07915.05
5.5.80.0030.07915.13
5.5.70.0080.08715.12
5.5.60.0020.09114.96
5.5.50.0030.07615.12
5.5.40.0070.07315.16
5.5.30.0070.07914.98
5.5.20.0040.07515.22
5.5.10.0060.07015.04
5.5.00.0030.07415.02
5.4.450.0070.08715.19
5.4.440.0020.07515.16
5.4.430.0020.08515.37
5.4.420.0060.07615.25
5.4.410.0100.09115.25
5.4.400.0090.09214.82
5.4.390.0050.08514.91
5.4.380.0050.08214.79
5.4.370.0070.09115.15
5.4.360.0030.09014.89
5.4.350.0000.09915.04
5.4.340.0030.09714.66
5.4.330.0000.08210.75
5.4.320.0030.08515.15
5.4.310.0030.07414.83
5.4.300.0020.10314.98
5.4.290.0050.07214.98
5.4.280.0070.09714.89
5.4.270.0030.08414.86
5.4.260.0070.09514.88
5.4.250.0080.08214.96
5.4.240.0030.08214.86
5.4.230.0020.08914.81
5.4.220.0020.09815.15
5.4.210.0070.09315.12
5.4.200.0000.07515.11
5.4.190.0030.07015.11
5.4.180.0030.06915.05
5.4.170.0020.07015.02
5.4.160.0000.07315.01
5.4.150.0050.07115.06
5.4.140.0060.06113.67
5.4.130.0050.07313.44
5.4.120.0050.08213.61
5.4.110.0050.06713.75
5.4.100.0030.09213.81
5.4.90.0020.09613.72
5.4.80.0050.07313.68
5.4.70.0060.08713.60
5.4.60.0030.07113.68
5.4.50.0080.06913.70
5.4.40.0050.06713.63
5.4.30.0000.07413.66
5.4.20.0020.07013.54
5.4.10.0000.06713.71
5.4.00.0020.07213.25
5.3.290.0030.09112.60
5.3.280.0030.09512.39
5.3.270.0020.07512.63
5.3.260.0030.06312.54
5.3.250.0050.06012.46
5.3.240.0070.07112.51
5.3.230.0020.07412.53
5.3.220.0030.09112.47
5.3.210.0050.08312.45
5.3.200.0030.05412.44
5.3.190.0050.07512.44
5.3.180.0020.06712.57
5.3.170.0030.08312.56
5.3.160.0070.05512.58
5.3.150.0030.05312.60
5.3.140.0020.05912.53
5.3.130.0020.05612.54
5.3.120.0020.06212.53
5.3.110.0020.05612.52
5.3.100.0000.05912.27
5.3.90.0050.05612.17
5.3.80.0040.05412.21
5.3.70.0020.05412.25
5.3.60.0030.02512.09
5.3.50.0020.02412.00
5.3.40.0030.02012.10
5.3.30.0050.02012.17
5.3.20.0020.02511.82
5.3.10.0030.02211.89
5.3.00.0030.02712.02
5.2.170.0020.01910.37
5.2.160.0030.02010.23
5.2.150.0030.01910.28
5.2.140.0000.02310.22
5.2.130.0020.01610.26
5.2.120.0020.01910.24
5.2.110.0000.02110.31
5.2.100.0020.02010.24
5.2.90.0020.02310.15
5.2.80.0000.02210.21
5.2.70.0030.02310.04
5.2.60.0000.02310.18
5.2.50.0030.03110.28
5.2.40.0050.03710.26
5.2.30.0080.03817.95
5.2.20.0080.02117.75
5.2.10.0010.02210.08
5.2.00.0020.02410.01
5.1.60.0030.1029.38
5.1.50.0020.1009.38
5.1.40.0030.1049.31
5.1.30.0020.1319.54
5.1.20.0080.1269.41
5.1.10.0030.1309.33
5.1.00.0030.1089.31
5.0.50.0050.1328.46
5.0.40.0020.1178.46
5.0.30.0020.1238.44
5.0.20.0020.0968.44
5.0.10.0020.0978.44
5.0.00.0030.1308.44
4.4.90.0030.0958.44
4.4.80.0050.01413.43
4.4.70.0070.01913.35
4.4.60.0030.01613.38
4.4.50.0020.1018.44
4.4.40.0030.1328.44
4.4.30.0020.1198.44
4.4.20.0020.1118.44
4.4.10.0000.1268.44
4.4.00.0000.1268.44
4.3.110.0020.0938.44
4.3.100.0000.1078.44
4.3.90.0030.1098.44
4.3.80.0020.0988.44
4.3.70.0000.1218.44
4.3.60.0000.1148.44
4.3.50.0020.1118.44
4.3.40.0000.1268.44
4.3.30.0020.0208.44
4.3.20.0030.0208.44
4.3.10.0030.0158.44
4.3.00.0020.0178.44

preferences:
43.44 ms | 401 KiB | 5 Q